Electrical condenser



July 1, 1930. GILLING 1,769,021

ELECTRICAL CbNDENSER Filed Feb. 26, 1925 INVENTOR PRESTON E Gnu/v5 UNITED STATES PATENT F rnns'ron 1i. eILLmG, on in: omen," NEW mnsnmassmuoa T0 name connszussa 001mm, or CAMDEN, NEW JERSEY m mm oouimnsna Application fled mama, 1925. Serial 110.,11'3521 This invention relates to an electrical con- I denser in which a stack of alternate layers of mica and metal foil ans built up and held between a pair of binding or bolster plates through the medium of claim in" members which engage, not onlythe indin members, but the ends of the metal foi which have alternate layers broughtoutat the opposite ends of the condenser'stack.

The condensersta'ck per se, may be constructed in any suitable manner such as that described in Van Deventer Patent 1,181,623 issued May 2 of Harry A. I Iatch, Serial No. 41 ,347 filed October 16, 1920, now Patent 1,574,424, issued February 23, 1926.

The condenser hereindisclosed is particularly adapted for use in connection with radio circuits and apparatus, although it is to be understood that it is not limited exclusively to this kind of use.

In the Van Deventer, and Hatch patents above referred to, certainty es of clamping terminals are shown and dbscribed. The clamping means herein disclosed is materially different from the clamping terminals of said patents and application'referred to, or other prior art, as will be hereinafter pointed out.-

Fixed condensers used inv radio receiving circuits are usually of relatively low capacity; consequently the number of metallic conducting plates or elements forming the condenser stack is relatively few; in fact, for very low capacity condensers only one pair of plates of suitable area need be used.

the objects to utilize the conducting plates for a number of tying and cheapemng not only the cost of the condenser, but reducing the time required to connect it into a radio circuit.

Other objects will be apparent to one skilled in this atrt after a study of the specification taken in connection with the annexed drawing wherein Figure l is a plan view of my improved condenser showing a grid lead mounted thereon.

Figure 2 is a side view of Fig. 1.

1916, or in the application a condenser of this character, it is one of purposes thereby simpli-' Figure 3 is a view of theright hand eiid ofF1g.1.

Figure 4 is a sectional view on the lines 4-4of Fig.1. y '7 In the various figures, 1 and 2 are binding or bolster members preferably of'good stiff insulatingmaterial and between thesemeim bers is positioned the condenser elements or conducting plates separated by suitable dielectric material such as mica-such a group of elements are illustrated by 3 in ig. 4, the outer elementsor conducting plates of the stack are preferably of thicker material as indicated by the numbers 4 and 5, which plates are formed with arms" 6 and 7 terminating in ends suitableto receivea high resistance unit 8, commonly referred to as a grid leak Each of the arms 6 and7 have formed integral therewith, a spring tongue 9 so as to produce an eyelet '10 through which a conductor may be passed thereby and gripped by" the resilient or spring tongue 9, tius making contact with each of the'elements 4 and 5 of the corn denser or with other properly associated elej ments 3. In somecases, I'may form lugs 11" and 12 on the conducting plates-'4 and 5 respectively, which lugs may each have a hole 13 therein for the purpose of mountin the condenser when it is not desired'to sli ably mount it on the" conductor or bus-bar by means of the spring tongue 9, or eyelet 10, as just described. Each of the lugs 11 and 12-may also be provided with an car '14 to which a conductor may be soldered or otherwise fastenedthereto. Of course. it is to be understood that where the lugs 11 and 12 are used for mounting the condenser, proper consideration must be given to insulating these lugs in any suitable manner so that'the condenser will function. As a means for holding the binding or bolster members 1 and 2 in position, the, conducting plates '4' and dare? provided withsclaming" fin ers 15, which pass over the" edge 0 the ates 4 and 5 and are bent downward over t "'e outer surfaces thereof. From the construction just described it will be clear, that the conducting plates 4 and 5 serve several purposes, rst they act as the capacity elements of the condenser, secondly they are provided with means which are the fingers 15, for clamping the condenser stack together, and being provided as they are with arms 6 and 7, they serve as direct supporting means for the grid leak, at the same time, the arms 6 and 7 are so constructed that the conductors may be quickly attached or detached to or from them. Furthermore these plates 4 and 5 are of suflicient rigidity so that the condenser may be mounted directly therefrom, without further supporting means. In some cases 'I may use a metal clamp 16 passing over one of the bolster members and locking on the other as is clearly shown in Fig. 1. Vhen the metal clamp 16 is used, I prefer to l'ur nish it with a central opening 17 and likewise the clamping members 1 and 2 and the conducting plates 4 and 5 as well as the other elements of the condenser if they are used, so that a mounting screw may be passed through the hole or opening 17. This sort of mounting has some advantage in that the screw tends to bind the condenser together at the central portion. The clamping member 16 may also be provided with lugs similar to 11 and 12 for the purpose of mounting the condenser and it is therefore clearly apparent that the various details for carrying my invention into practice may be varied considerably ithout departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim is:

1. An electrical condenser comprising a plurality of conducting plates separated by dielectric plates, a pair of binding members and means integral with at least one pair of said conducting plates for clamping said binding members in position.

2. An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, a pair of binding members and means integral with said conducting plates for clamping said binding members for the purpose described.

An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, a pair of binding members, means including clips integral with said conducting plates for engaging said binding members to hold them in position, means integral with said plates for making connections thereto and means integral with each plate for mounting av shunt across said plates.

4. An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, a pair of binding members, means including clips integral with said conducting plates for engaging said binding members to hold them in position, said plates having means formed integral therewith to act as connecting means for a conductor and also having further integral means for mounting a resistance device thereon.

5. An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, a pair of binding members, lugs integral with each of said pair of plates for making direct connection thereto, additional lugs on said plates for mounting, a relatively high resistance conductor, and means including parts integral with said plates for clamping said binding members securely together.

6. An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, a pair of binding members, a plurality of lugs integral with each of said pair of plates, at least one of said sets of lugs having conductor attachment means and one set of lugs having means for carrying a shunt resistance, and means including lugs integral with said plates for clamping the binding members in position.

7. An electrical condenser comprising at least one pair of conducting plates separated by a dielectric, said conducting plates being of sufficient rigidity so that the condenser may be mounted therefrom; lugs integral with and extending from said plates, by which the condenser may be mounted, a pair of binding members for the condenser and means including members integral with said plates for holding said binding members securely in position.

In testimony whereof, I affix my signature.

PRESTON E. GILLING. 

